introduce MwLLEndDraw, which can be stubbed safely on any platforms and exists purely for wayland to be able to swap buffers at a better time

include/Mw/LowLevel.h

@@ -164,6 +164,7 @@ MWDECL void (*MwLLDestroy)(MwLL handle);
 
 MWDECL void (*MwLLPolygon)(MwLL handle, MwPoint* points, int points_count, MwLLColor color);
 MWDECL void (*MwLLLine)(MwLL handle, MwPoint* points, MwLLColor color);
+MWDECL void (*MwLLEndDraw)(MwLL handle);
 
 MWDECL MwLLColor (*MwLLAllocColor)(MwLL handle, int r, int g, int b);
 MWDECL void (*MwLLColorUpdate)(MwLL handle, MwLLColor c, int r, int g, int b);

src/backend/call.c

@@ -11,6 +11,7 @@
 \
 		MwLLPolygon = MwLLPolygonImpl; \
 		MwLLLine    = MwLLLineImpl; \
+		MwLLEndDraw = MwLLEndDrawImpl; \
 \
 		MwLLAllocColor	= MwLLAllocColorImpl; \
 		MwLLColorUpdate = MwLLColorUpdateImpl; \

src/backend/gdi.c

@@ -278,6 +278,8 @@ static void MwLLDestroyImpl(MwLL handle) {
 	free(handle);
 }
 
+static void MwLLEndDrawImpl(MwLL handle) {}
+
 static void MwLLPolygonImpl(MwLL handle, MwPoint* points, int points_count, MwLLColor color) {
 	POINT* p   = malloc(sizeof(*p) * points_count);
 	HPEN   pen = CreatePen(PS_NULL, 0, RGB(0, 0, 0));

src/backend/wayland.c

@@ -255,6 +255,7 @@ static MwBool egl_setup(MwLL self, int width, int height) {
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
 	glOrtho(0, width, height, 0, -1, 1);
+	glEnable(GL_TEXTURE_2D);
 
 	self->wayland.egl_display = display;
 	self->wayland.egl_surface = surface;
@@ -556,31 +557,11 @@ static void MwLLSetWHImpl(MwLL handle, int w, int h) {
 }
 
 static void MwLLPolygonImpl(MwLL handle, MwPoint* points, int points_count, MwLLColor color) {
-	/*
+	int i;
-	 * TODO: this function sucks shit, ioi needs to make it not suck shit :)
-	 */
-	int			  i;
-	PFNGLBINDFRAMEBUFFERPROC  glBindFramebuffer  = (PFNGLBINDFRAMEBUFFERPROC)eglGetProcAddress("glBindFramebuffer");
-	PFNGLBINDRENDERBUFFERPROC glBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC)eglGetProcAddress("glBindRenderbuffer");
-	int			  w, h;
 
-	if(handle->wayland.type == MWLL_WAYLAND_TOPLEVEL) {
-		w = handle->wayland.ww;
-		h = handle->wayland.wh;
-	} else {
-		MwLL parent = handle->wayland.parent;
-		while(parent->wayland.type != MWLL_WAYLAND_TOPLEVEL) {
-			parent = parent->wayland.parent;
-		}
-		w = parent->wayland.ww;
-		h = parent->wayland.wh;
-	}
-
-	glEnable(GL_TEXTURE_2D);
 	glBindTexture(GL_TEXTURE_2D, 0);
 	glBindFramebuffer(GL_FRAMEBUFFER, handle->wayland.fbo);
 	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, handle->wayland.fbo_texture, 0);
-	glLineWidth(1);
 
 	if(points_count == 3) {
 		glBegin(GL_TRIANGLES);
@@ -598,9 +579,26 @@ static void MwLLPolygonImpl(MwLL handle, MwPoint* points, int points_count, MwLL
 	}
 	glEnd();
 	glFinish();
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+static void MwLLLineImpl(MwLL handle, MwPoint* points, MwLLColor color) {
+	//
+}
+
+static void MwLLEndDrawImpl(MwLL handle) {
+	int w, h;
+
+	if(handle->wayland.type == MWLL_WAYLAND_TOPLEVEL) {
+		w = handle->wayland.ww;
+		h = handle->wayland.wh;
+	} else {
+		MwLL parent = handle->wayland.parent;
+		w	    = parent->wayland.ww;
+		h	    = parent->wayland.wh;
+	}
 
 	glBindTexture(GL_TEXTURE_2D, handle->wayland.fbo_texture);
-	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 	glClear(GL_COLOR_BUFFER_BIT);
 	glClearColor(0, 0, 0, 1);
 
@@ -618,17 +616,12 @@ static void MwLLPolygonImpl(MwLL handle, MwPoint* points, int points_count, MwLL
 	glEnd();
 	glFinish();
 
+	wl_surface_damage(handle->wayland.surface, 0, 0, handle->wayland.ww, handle->wayland.wh);
 	if(!eglSwapBuffers(handle->wayland.egl_display, handle->wayland.egl_surface)) {
 		printf("error swapping buffers! %0X\n", eglGetError());
 	} else {
 		wl_surface_commit(handle->wayland.surface);
 	}
-	glDisable(GL_TEXTURE_2D);
-	handle->wayland.do_clear = MwFALSE;
-}
-
-static void MwLLLineImpl(MwLL handle, MwPoint* points, MwLLColor color) {
-	//
 }
 
 static MwLLColor MwLLAllocColorImpl(MwLL handle, int r, int g, int b) {

src/backend/x11.c

@@ -256,6 +256,8 @@ static void MwLLDestroyImpl(MwLL handle) {
 	free(handle);
 }
 
+static void MwLLEndDrawImpl(MwLL handle) {}
+
 static void MwLLPolygonImpl(MwLL handle, MwPoint* points, int points_count, MwLLColor color) {
 	int	i;
 	XPoint* p = malloc(sizeof(*p) * points_count);

src/core.c

@@ -334,6 +334,8 @@ void MwLoop(MwWidget handle) {
 		}
 		if(v != 0) break;
 
+		MwLLEndDraw(handle->lowlevel);
+
 		for(i = 0; i < arrlen(handle->tick_list); i++) {
 			MwDispatch(handle->tick_list[i], tick);
 			MwDispatchUserHandler(handle->tick_list[i], MwNtickHandler, NULL);

src/lowlevel.c

@@ -7,6 +7,8 @@ void (*MwLLDestroy)(MwLL handle);
 void (*MwLLPolygon)(MwLL handle, MwPoint* points, int points_count, MwLLColor color);
 void (*MwLLLine)(MwLL handle, MwPoint* points, MwLLColor color);
 
+void (*MwLLEndDraw)(MwLL handle);
+
 MwLLColor (*MwLLAllocColor)(MwLL handle, int r, int g, int b);
 void (*MwLLColorUpdate)(MwLL handle, MwLLColor c, int r, int g, int b);
 void (*MwLLFreeColor)(MwLLColor color);